Power couples

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US President Barack Obama (L) and US First Lady Michelle Obama (R) meet Britain's Prince William, the Duke of Cambridge (2nd L) and his wife Catherine, Duchess of Cambridge (2nd R) at Buckingham Palace, in central London. US President Barack Obama Tuesday basked in the lavish royal pageantry of a state visit to Britain, given an extra dash of glamour by a brief encounter with Prince William and his bride Catherine.

US President Barack Obama (L) and US First Lady Michelle Obama (R) meet Britain's Prince William, the Duke of Cambridge (2nd L) and his wife Catherine, Duchess of Cambridge (2nd R) at Buckingham Palace, in central London. US President Barack Obama Tuesday basked in the lavish royal pageantry of a state visit to Britain, given an extra dash of glamour by a brief encounter with Prince William and his bride Catherine. (Getty Images)

US President Barack Obama (L) and US First Lady Michelle Obama (R) meet Britain's Prince William, the Duke of Cambridge (2nd L) and his wife Catherine, Duchess of Cambridge (2nd R) at Buckingham Palace, in central London. US President Barack Obama Tuesday basked in the lavish royal pageantry of a state visit to Britain, given an extra dash of glamour by a brief encounter with Prince William and his bride Catherine.